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Influence of Epoxy Coating on Stress Transfer from Steel to Concrete

by Bilal S. Hamad, Univ of Texas, United States,
James O. Jirsa, Univ of Texas, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

To assess the influence of epoxy coating on the bond characteristics of reinforcing bars, a series of tests was conducted to determine differences in stress transfer between coated and uncoated bars using different diameter bars, various bar deformation patterns, different concrete strengths, and different levels of restraint to splitting. One series of tests involved pullout specimens, and another series involved beams with splices and with different amounts of transverse reinforcement. The results provide a direct comparison between the anchorage characteristics of coated and uncoated bars with all other parameters remaining constant in each case. The objective of the program is to develop recommendations for the design of splices and anchorage of epoxy-coated reinforcement.

Subject Headings: Reinforced concrete | Bars (structure) | Synthetic materials | Epoxy | Coating | Deformation (mechanics) | Anchorages

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